Lubricating grease analyses with added value
IMO recommends that slewing ring operators have an OELCHECK lubricating grease analysis performed every six months. The company has held these analyses in high esteem for many years due to the added value that they offer.
OELCHECK lubricating grease analyses:
- provide reliable information on the condition of the grease and other components
- accompany all new IMO developments at the field test stage
- can detect impending damage at an early stage
- provide warnings of lubricant ageing
- identify contaminants and their origins
- detect mixing with other greases
- assist with the optimisation of lubricant amounts and re-lubrication intervals
- contribute to operational reliability and have a positive influence on maintenance costs.
„Condition monitoring has many tools for keeping track of systems. However, they don‘t sound the alarm until things become problematic. A typical example are frequency meters in wind turbines. Although they deliver a direct alert in the event that deviating frequencies are registered, by this point the damage is often already done. A lubricating grease analysis allows us to see deep into the fuel and the components, which, in most cases, enables us to intervene before any damage can develop in the first place. And we‘re right where our customers need us – our service teams are at home anywhere in the world.“
As IMO GmbH & Co. KG‘s Head of Service, Hanjo Hermann knows all about the many possibilities offered by OELCHECK lubricating grease analyses.
The analyses are also the method of choice for determining lubricant amounts and relubrication intervals for the application at hand. IMO slewing rings are put to work in a wide range of installations. To begin with, lubricant amounts and re-lubrication intervals are defined based on empirical values and the load involved. A certain safety factor is always included in calculations from the outset. OELCHECK analyses are then conducted on the slewing ring and grease during operation. Based on these results, the lubricant amounts and re-lubrication intervals are adjusted step by step until the ideal state is achieved, while keeping in mind the golden rule: „Too much re-lubrication is expensive, but too little will cost even more!“
OELCHECK‘s all-inclusive analysis kit 5 is the perfect choice for examining IMO slewing ring greases, as it enables OELCHECK‘s tribologists to derive a precise description of the condition of the grease and the lubricated component. An assessment in the lab determines the following parameters: the components are subdivided according to wear, contaminants & additives, PQ index, IR spectroscopy, water content using the Karl Fischer titration method, and penetration value.
An all-inclusive OELCHECK analysis kit and sampling kit make it simple to take samples. In the case of IMO slewing rings that are over 1,000 mm in diameter, grease samples are taken by spatula from grease outlet boreholes at two to three points as close to possible to the bearing track in the main load-bearing area. Each sample is placed in a separate sample bottle, To allow the OELCHECK lab to make valid statements as to the condition of the grease and the slewing ring.